The power-efficient dual-channel OPA1662 and
quad-channel OPA1664 are two bipolar-input audio operational
amplifiers that are said to provide unmatched noise, distortion,
and bandwidth performance while dissipating a mere 1.5 mA. The
parts offer a 3.3-nV/√Hz noise density with a total
harmonic distortion plus noise of 0.00006% at 1 kHz, enabling the
design of much higher-performance audio equipment than previously
thought possible.

The devices offer a wide gain bandwidth of 22
MHz and slew rate of 17 V/µs, which provide higher signal
integrity and faster response to a wider range of input signal
frequencies. Operating range is from ±1.5 V to
±18 V or +3 V to +36 V. The OPA1662 is available today
in SO-8 and MSOP-8 packages, while the OPA1664 is available in
SO-14 and TSSOP-14 packages.

The OPAMPEVM universal op amp evaluation module
is available to accelerate the development of audio equipment using
the OPA1662 and OPA1664. The Active Filter Designer tool can help
system designers implement an op-amp filter design. TINA-TI SPICE
models and reference designs are also available today for the
OPA1662 and OPA1664 op amps. (a/1,000: OPA1662, $0.95; OPA1664,
$1.45; OPAMPEVM, $5 — available now.)